A calcium carbonate granular wholesale supplier is a business that sells bulk, granular-form calcium carbonate—typically in 25 kg bags, jumbo bags, or truckloads—to manufacturers and distributors rather than to retail consumers. Granular grades are chosen for low dust, good flow, and consistent particle size in plastics, paints, adhesives, and agricultural applications.
What should you check before choosing a calcium carbonate granular wholesale supplier?
Start with a current certificate of analysis covering purity (usually 97–99% CaCO3), moisture, whiteness, and particle-size distribution. Ask for a sample lot and confirm the supplier can repeat that specification batch after batch.
Also verify capacity and logistics: a wholesale supplier should state monthly tonnage, bag types, and lead times in writing. Reliable partners document origin and handling, which matters when you audit your own supply chain.
Why do buyers source granular calcium carbonate from China?
China is a major producer of calcium salts, and many buyers source granular calcium carbonate there because of large limestone reserves, mature grinding capacity, and competitive bulk pricing. Working with an established calcium manufacturer in China can also give access to coated and uncoated granular grades in one place.
The key is due diligence: confirm export experience, request third-party test reports, and check that the calcium supplier can provide consistent mesh sizes and coating levels across repeat orders.
How do you compare quotes from granular calcium carbonate suppliers?
Compare quotes on a delivered-cost basis, not just unit price. Include freight, packaging, duties, and payment terms, because a low ex-works price can disappear once logistics are added.
- Specification match: purity, whiteness, moisture, and particle size.
- Packaging: 25 kg woven bags, jumbo bags, or bulk tanker.
- Consistency: documented batch-to-batch variation.
- Support: samples, technical data sheets, and responsive communication.
A good calcium supplier will answer specification questions directly and provide references or audit documentation on request.
常见问题
What is granular calcium carbonate used for?
Granular calcium carbonate is used as a filler and extender in plastics, paints, adhesives, sealants, and agricultural products. Its granular form reduces dust and improves flow compared with fine powder grades.
How do I verify a wholesale supplier's quality?
Request a certificate of analysis for each lot and compare it with your specification for purity, moisture, whiteness, and particle size. Ordering a sample before a bulk commitment is the simplest way to confirm consistency.
What is the typical minimum order for granular calcium carbonate?
Minimum order quantities vary by supplier and are often set around a full pallet or a small truckload. Ask the supplier directly, since terms depend on grade, packaging, and destination.
